Abstract
The flow distribution side plate (FDSP) of the intra-vane pump is loaded to the hydraulic thrust of the oil film of the distribution pair and the hydraulic pressing force of the kidney-shaped cavity on the end cover of the pump core. The kidney-shaped cavity structure in the end cover has a certain effect on the deformation of the FDSP, and then affects the oil film thickness, leakage power loss and friction power loss of the distribution pair. In this paper, the hydraulic pressure distribution of oil film in the distribution pair is studied. Using the principle of redundant squeezing force, the calculation formula for the kidney-shaped cavity area on the end cover is deduced. Through simulation, the contour of the deformation of the FDSP is obtained, and it is found that the deformation of the discharge area and the oil suction area is not uniform. By improving the design of the kidney-shaped cavity structure in the end cover, the uniformity of the FDSP deformation can be achieved. The research conclusion has certain guiding significance for improving the volume efficiency and mechanical efficiency of the intra-vane type pump.
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